Who's This?

For a long time, Dragon ran an advertisement that featured the following image:

Since the ad was for subscriptions to Dragon, I've always assumed, perhaps falsely, that the fellow in the photo was a staff member of either the magazine or TSR, but I have no firm basis for that assumption. In any case, I'm prevailing upon readers more knowledgeable than I to help me determine the would-be jumper's identity. Is he perhaps Tom Wham, creator of Snit's Revenge ? Or is he someone else?